void IDualityBackend.Shutdown()
{
if (activeInstance == this)
{
activeInstance = null;
}
if (DualityApp.ExecContext != DualityApp.ExecutionContext.Terminated)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
if (this.sharedBatchIBO != null)
{
this.sharedBatchIBO.Dispose();
this.sharedBatchIBO = null;
}
}
// Since the window outlives the graphics backend in the usual launcher setup,
// we'll need to unhook early, so Duality can complete its cleanup before the window does.
if (this.activeWindow != null)
{
this.activeWindow.UnhookFromDuality();
this.activeWindow = null;
}
}
void IDisposable.Dispose()
{
if (DualityApp.ExecContext == DualityApp.ExecutionContext.Terminated)
{
return;
}
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
if (this.handleMainFBO != 0)
{
GL.Ext.DeleteFramebuffers(1, ref this.handleMainFBO);
this.handleMainFBO = 0;
}
if (this.handleDepthRBO != 0)
{
GL.Ext.DeleteRenderbuffers(1, ref this.handleDepthRBO);
this.handleDepthRBO = 0;
}
if (this.handleMsaaFBO != 0)
{
GL.Ext.DeleteFramebuffers(1, ref this.handleMsaaFBO);
this.handleMsaaFBO = 0;
}
for (int i = 0; i < this.targetInfos.Count; i++)
{
if (this.targetInfos.Data[i].HandleMsaaColorRBO != 0)
{
GL.Ext.DeleteRenderbuffers(1, ref this.targetInfos.Data[i].HandleMsaaColorRBO);
this.targetInfos.Data[i].HandleMsaaColorRBO = 0;
}
}
}
void INativeShaderPart.LoadSource(string sourceCode, ShaderType type)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
this.type = type;
if (this.handle == 0)
{
this.handle = GL.CreateShader(GetOpenTKShaderType(type));
}
GL.ShaderSource(this.handle, sourceCode);
GL.CompileShader(this.handle);
// Log all errors and warnings from the info log
string infoLog = GL.GetShaderInfoLog(this.handle);
if (!string.IsNullOrWhiteSpace(infoLog))
{
using (StringReader reader = new StringReader(infoLog))
{
while (true)
{
string line = reader.ReadLine();
if (line == null)
{
break;
}
if (string.IsNullOrWhiteSpace(line))
{
continue;
}
if (line.IndexOf("warning", StringComparison.InvariantCultureIgnoreCase) != -1)
{
Logs.Core.WriteWarning("{0}", line);
}
else if (line.IndexOf("error", StringComparison.InvariantCultureIgnoreCase) != -1)
{
Logs.Core.WriteError("{0}", line);
}
else
{
Logs.Core.Write("{0}", line);
}
}
}
}
// If compilation failed, throw an exception
int result;
GL.GetShader(this.handle, ShaderParameter.CompileStatus, out result);
if (result == 0)
{
throw new BackendException(string.Format("Failed to compile {0} shader:{2}{1}", type, infoLog, Environment.NewLine));
}
}
void IDisposable.Dispose()
{
if (DualityApp.ExecContext != DualityApp.ExecutionContext.Terminated &&
this.handle != 0)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
GL.DeleteTexture(this.handle);
this.handle = 0;
}
}
public void ApplyPostRender()
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
if (!this.pendingPostRender)
{
return;
}
// Resolve multisampling to the main FBO
if (this.samples > 0)
{
GL.Ext.BindFramebuffer(FramebufferTarget.ReadFramebuffer, this.handleMsaaFBO);
GL.Ext.BindFramebuffer(FramebufferTarget.DrawFramebuffer, this.handleMainFBO);
for (int i = 0; i < this.targetInfos.Count; i++)
{
GL.ReadBuffer((ReadBufferMode)((int)ReadBufferMode.ColorAttachment0 + i));
GL.DrawBuffer((DrawBufferMode)((int)DrawBufferMode.ColorAttachment0 + i));
GL.Ext.BlitFramebuffer(
0, 0, this.targetInfos.Data[i].Target.Width, this.targetInfos.Data[i].Target.Height,
0, 0, this.targetInfos.Data[i].Target.Width, this.targetInfos.Data[i].Target.Height,
ClearBufferMask.ColorBufferBit, BlitFramebufferFilter.Nearest);
}
}
// Generate mipmaps for the target textures
int lastTexId = -1;
for (int i = 0; i < this.targetInfos.Count; i++)
{
if (!this.targetInfos.Data[i].Target.HasMipmaps)
{
continue;
}
if (lastTexId == -1)
{
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, 0);
GL.GetInteger(GetPName.TextureBinding2D, out lastTexId);
}
int texId = this.targetInfos.Data[i].Target.Handle;
GL.BindTexture(TextureTarget.Texture2D, texId);
GL.Ext.GenerateMipmap(GenerateMipmapTarget.Texture2D);
}
// Reset OpenGL state
if (lastTexId != -1)
{
GL.BindTexture(TextureTarget.Texture2D, lastTexId);
}
ApplyGLBind(curBound);
this.pendingPostRender = false;
}
public void Dispose()
{
if (DualityApp.ExecContext != DualityApp.ExecutionContext.Terminated &&
this.handle != 0)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
GL.DeleteBuffer(this.handle);
}
this.handle = 0;
this.bufferSize = 0;
}
void INativeRenderTarget.GetData <T>(T[] buffer, ColorDataLayout dataLayout, ColorDataElementType dataElementType, int targetIndex, int x, int y, int width, int height)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
NativeRenderTarget lastRt = BoundRT;
Bind(this);
{
GL.ReadBuffer((ReadBufferMode)((int)ReadBufferMode.ColorAttachment0 + targetIndex));
GL.ReadPixels(x, y, width, height, dataLayout.ToOpenTK(), dataElementType.ToOpenTK(), buffer);
GL.ReadBuffer(ReadBufferMode.Back);
}
Bind(lastRt);
}
void INativeTexture.GetData(IntPtr target, ColorDataLayout dataLayout, ColorDataElementType dataElementType)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
int lastTexId;
GL.GetInteger(GetPName.TextureBinding2D, out lastTexId);
GL.BindTexture(TextureTarget.Texture2D, this.handle);
GL.GetTexImage(TextureTarget.Texture2D, 0,
dataLayout.ToOpenTK(), dataElementType.ToOpenTK(),
target);
GL.BindTexture(TextureTarget.Texture2D, lastTexId);
}
void INativeRenderTarget.GetData(IntPtr buffer, ColorDataLayout dataLayout, ColorDataElementType dataElementType, int targetIndex, int x, int y, int width, int height)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
this.ApplyPostRender();
if (curBound != this)
{
ApplyGLBind(this);
}
{
GL.Ext.BindFramebuffer(FramebufferTarget.ReadFramebuffer, this.handleMainFBO);
GL.ReadBuffer((ReadBufferMode)((int)ReadBufferMode.ColorAttachment0 + targetIndex));
GL.ReadPixels(x, y, width, height, dataLayout.ToOpenTK(), dataElementType.ToOpenTK(), buffer);
}
ApplyGLBind(curBound);
}
void IGraphicsBackend.GetOutputPixelData(IntPtr buffer, ColorDataLayout dataLayout, ColorDataElementType dataElementType, int x, int y, int width, int height)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
NativeRenderTarget lastRt = NativeRenderTarget.BoundRT;
NativeRenderTarget.Bind(null);
{
// Use a temporary local buffer, since the image will be upside-down because
// of OpenGL's coordinate system and we'll need to flip it before returning.
byte[] byteData = new byte[width * height * 4];
// Retrieve pixel data
GL.ReadPixels(x, y, width, height, dataLayout.ToOpenTK(), dataElementType.ToOpenTK(), byteData);
// Flip the retrieved image vertically
int bytesPerLine = width * 4;
byte[] switchLine = new byte[width * 4];
for (int flipY = 0; flipY < height / 2; flipY++)
{
int lineIndex = flipY * width * 4;
int lineIndex2 = (height - 1 - flipY) * width * 4;
// Copy the current line to the switch buffer
for (int lineX = 0; lineX < bytesPerLine; lineX++)
{
switchLine[lineX] = byteData[lineIndex + lineX];
}
// Copy the opposite line to the current line
for (int lineX = 0; lineX < bytesPerLine; lineX++)
{
byteData[lineIndex + lineX] = byteData[lineIndex2 + lineX];
}
// Copy the switch buffer to the opposite line
for (int lineX = 0; lineX < bytesPerLine; lineX++)
{
byteData[lineIndex2 + lineX] = switchLine[lineX];
}
}
// Copy the flipped data to the output buffer
Marshal.Copy(byteData, 0, buffer, width * height * 4);
}
NativeRenderTarget.Bind(lastRt);
}
void INativeTexture.SetupEmpty(TexturePixelFormat format, int width, int height, TextureMinFilter minFilter, TextureMagFilter magFilter, TextureWrapMode wrapX, TextureWrapMode wrapY, int anisoLevel, bool mipmaps)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
int lastTexId;
GL.GetInteger(GetPName.TextureBinding2D, out lastTexId);
if (lastTexId != this.handle)
{
GL.BindTexture(TextureTarget.Texture2D, this.handle);
}
// Set texture parameters
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)ToOpenTKTextureMinFilter(minFilter));
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)ToOpenTKTextureMagFilter(magFilter));
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)ToOpenTKTextureWrapMode(wrapX));
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)ToOpenTKTextureWrapMode(wrapY));
// Anisotropic filtering
if (anisoLevel > 0)
{
GL.TexParameter(TextureTarget.Texture2D, (TextureParameterName)ExtTextureFilterAnisotropic.TextureMaxAnisotropyExt, (float)anisoLevel);
}
// If needed, care for Mipmaps
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.GenerateMipmap, mipmaps ? 1 : 0);
// Setup pixel format
GL.TexImage2D(TextureTarget.Texture2D, 0,
ToOpenTKPixelFormat(format), width, height, 0,
GLPixelFormat.Rgba, PixelType.UnsignedByte, IntPtr.Zero);
this.width = width;
this.height = height;
this.format = format;
this.mipmaps = mipmaps;
if (lastTexId != this.handle)
{
GL.BindTexture(TextureTarget.Texture2D, lastTexId);
}
}
void INativeTexture.LoadData(TexturePixelFormat format, int width, int height, IntPtr data, ColorDataLayout dataLayout, ColorDataElementType dataElementType)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
int lastTexId;
GL.GetInteger(GetPName.TextureBinding2D, out lastTexId);
GL.BindTexture(TextureTarget.Texture2D, this.handle);
// Load pixel data to video memory
GL.TexImage2D(TextureTarget.Texture2D, 0,
ToOpenTKPixelFormat(format), width, height, 0,
dataLayout.ToOpenTK(), dataElementType.ToOpenTK(),
data);
this.width = width;
this.height = height;
this.format = format;
GL.BindTexture(TextureTarget.Texture2D, lastTexId);
}
void IGraphicsBackend.GetOutputPixelData <T>(T[] buffer, ColorDataLayout dataLayout, ColorDataElementType dataElementType, int x, int y, int width, int height)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
NativeRenderTarget lastRt = NativeRenderTarget.BoundRT;
NativeRenderTarget.Bind(null);
{
GL.ReadPixels(x, y, width, height, dataLayout.ToOpenTK(), dataElementType.ToOpenTK(), buffer);
// The image will be upside-down because of OpenGL's coordinate system. Flip it.
int structSize = System.Runtime.InteropServices.Marshal.SizeOf(typeof(T));
T[] switchLine = new T[width * 4 / structSize];
for (int flipY = 0; flipY < height / 2; flipY++)
{
int lineIndex = flipY * width * 4 / structSize;
int lineIndex2 = (height - 1 - flipY) * width * 4 / structSize;
// Copy the current line to the switch buffer
for (int lineX = 0; lineX < width; lineX++)
{
switchLine[lineX] = buffer[lineIndex + lineX];
}
// Copy the opposite line to the current line
for (int lineX = 0; lineX < width; lineX++)
{
buffer[lineIndex + lineX] = buffer[lineIndex2 + lineX];
}
// Copy the switch buffer to the opposite line
for (int lineX = 0; lineX < width; lineX++)
{
buffer[lineIndex2 + lineX] = switchLine[lineX];
}
}
}
NativeRenderTarget.Bind(lastRt);
}
void IDisposable.Dispose()
{
if (DualityApp.ExecContext == DualityApp.ExecutionContext.Terminated)
{
return;
}
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
// If there are changes pending to be applied to the bound textures,
// they should be executed before the render target is gone.
this.ApplyPostRender();
if (this.handleMainFBO != 0)
{
GL.Ext.DeleteFramebuffers(1, ref this.handleMainFBO);
this.handleMainFBO = 0;
}
if (this.handleDepthRBO != 0)
{
GL.Ext.DeleteRenderbuffers(1, ref this.handleDepthRBO);
this.handleDepthRBO = 0;
}
if (this.handleMsaaFBO != 0)
{
GL.Ext.DeleteFramebuffers(1, ref this.handleMsaaFBO);
this.handleMsaaFBO = 0;
}
for (int i = 0; i < this.targetInfos.Count; i++)
{
if (this.targetInfos.Data[i].HandleMsaaColorRBO != 0)
{
GL.Ext.DeleteRenderbuffers(1, ref this.targetInfos.Data[i].HandleMsaaColorRBO);
this.targetInfos.Data[i].HandleMsaaColorRBO = 0;
}
}
}
void INativeShaderProgram.LoadProgram(INativeShaderPart vertex, INativeShaderPart fragment)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
if (this.handle == 0)
{
this.handle = GL.CreateProgram();
}
else
{
this.DetachShaders();
}
// Attach both shaders
if (vertex != null)
{
GL.AttachShader(this.handle, (vertex as NativeShaderPart).Handle);
}
if (fragment != null)
{
GL.AttachShader(this.handle, (fragment as NativeShaderPart).Handle);
}
// Link the shader program
GL.LinkProgram(this.handle);
int result;
GL.GetProgram(this.handle, GetProgramParameterName.LinkStatus, out result);
if (result == 0)
{
string errorLog = GL.GetProgramInfoLog(this.handle);
this.RollbackAtFault();
throw new BackendException(string.Format("Linker error:{1}{0}", errorLog, Environment.NewLine));
}
// Collect variable infos from sub programs
{
NativeShaderPart vert = vertex as NativeShaderPart;
NativeShaderPart frag = fragment as NativeShaderPart;
ShaderFieldInfo[] fragVarArray = frag != null ? frag.Fields : null;
ShaderFieldInfo[] vertVarArray = vert != null ? vert.Fields : null;
if (fragVarArray != null && vertVarArray != null)
{
this.fields = vertVarArray.Union(fragVarArray).ToArray();
}
else if (vertVarArray != null)
{
this.fields = vertVarArray.ToArray();
}
else
{
this.fields = fragVarArray.ToArray();
}
}
// Determine each variables location
this.fieldLocations = new int[this.fields.Length];
for (int i = 0; i < this.fields.Length; i++)
{
if (this.fields[i].Scope == ShaderFieldScope.Uniform)
{
this.fieldLocations[i] = GL.GetUniformLocation(this.handle, this.fields[i].Name);
}
else
{
this.fieldLocations[i] = GL.GetAttribLocation(this.handle, this.fields[i].Name);
}
}
// Determine whether we're using builtin shader variables
this.builtinIndex = new int[this.fields.Length];
bool anyBuildinUsed = false;
for (int i = 0; i < this.fields.Length; i++)
{
if (this.fields[i].Scope == ShaderFieldScope.Uniform)
{
this.builtinIndex[i] = BuiltinShaderFields.GetIndex(this.fields[i].Name);
if (this.builtinIndex[i] != BuiltinShaderFields.InvalidIndex)
{
anyBuildinUsed = true;
}
}
else
{
this.builtinIndex[i] = BuiltinShaderFields.InvalidIndex;
}
}
if (!anyBuildinUsed)
{
this.builtinIndex = new int[0];
}
}
void INativeShaderProgram.LoadProgram(IEnumerable <INativeShaderPart> shaderParts, IEnumerable <ShaderFieldInfo> shaderFields)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
// Verify that we have exactly one shader part for each stage.
// Other scenarios are valid in desktop GL, but not GL ES, so
// we'll enforce the stricter rules manually to ease portability.
int vertexCount = 0;
int fragmentCount = 0;
foreach (INativeShaderPart part in shaderParts)
{
Resources.ShaderType type = (part as NativeShaderPart).Type;
if (type == Resources.ShaderType.Fragment)
{
fragmentCount++;
}
else if (type == Resources.ShaderType.Vertex)
{
vertexCount++;
}
}
if (vertexCount == 0)
{
throw new ArgumentException("Cannot load program without vertex shader.");
}
if (fragmentCount == 0)
{
throw new ArgumentException("Cannot load program without fragment shader.");
}
if (vertexCount > 1)
{
throw new ArgumentException("Cannot attach multiple vertex shaders to the same program.");
}
if (fragmentCount > 1)
{
throw new ArgumentException("Cannot attach multiple fragment shaders to the same program.");
}
// Create or reset GL program
if (this.handle == 0)
{
this.handle = GL.CreateProgram();
}
else
{
this.DetachShaders();
}
// Attach all individual shaders to the program
foreach (INativeShaderPart part in shaderParts)
{
GL.AttachShader(this.handle, (part as NativeShaderPart).Handle);
}
// Link the shader program
GL.LinkProgram(this.handle);
int result;
GL.GetProgram(this.handle, GetProgramParameterName.LinkStatus, out result);
if (result == 0)
{
string errorLog = GL.GetProgramInfoLog(this.handle);
this.RollbackAtFault();
throw new BackendException(string.Format("Linker error:{1}{0}", errorLog, Environment.NewLine));
}
// Collect variables that are available through shader reflection, e.g.
// haven't been optimized of #ifdef'd away.
List <int> validLocations = new List <int>();
List <ShaderFieldInfo> validFields = new List <ShaderFieldInfo>();
foreach (ShaderFieldInfo field in shaderFields)
{
int location;
if (field.Scope == ShaderFieldScope.Uniform)
{
location = GL.GetUniformLocation(this.handle, field.Name);
}
else
{
location = GL.GetAttribLocation(this.handle, field.Name);
}
if (location >= 0)
{
validLocations.Add(location);
validFields.Add(field);
}
}
this.fields = validFields.ToArray();
this.fieldLocations = validLocations.ToArray();
}
void INativeRenderTarget.Setup(IReadOnlyList <INativeTexture> targets, AAQuality multisample, bool depthBuffer)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
if (targets == null)
{
return;
}
if (targets.Count == 0)
{
return;
}
if (targets.All(i => i == null))
{
return;
}
int highestAALevel = MathF.RoundToInt(MathF.Log(MathF.Max(MaxRenderTargetSamples, 1.0f), 2.0f));
int targetAALevel = highestAALevel;
switch (multisample)
{
case AAQuality.High: targetAALevel = highestAALevel; break;
case AAQuality.Medium: targetAALevel = highestAALevel / 2; break;
case AAQuality.Low: targetAALevel = highestAALevel / 4; break;
case AAQuality.Off: targetAALevel = 0; break;
}
int targetSampleCount = MathF.RoundToInt(MathF.Pow(2.0f, targetAALevel));
GraphicsMode sampleMode =
GraphicsBackend.ActiveInstance.AvailableGraphicsModes.LastOrDefault(m => m.Samples <= targetSampleCount) ??
GraphicsBackend.ActiveInstance.AvailableGraphicsModes.Last();
this.samples = sampleMode.Samples;
this.depthBuffer = depthBuffer;
// Synchronize target information
{
this.targetInfos.Reserve(targets.Count);
int localIndex = 0;
for (int i = 0; i < targets.Count; i++)
{
if (targets[i] == null)
{
continue;
}
this.targetInfos.Count = Math.Max(this.targetInfos.Count, localIndex + 1);
this.targetInfos.Data[localIndex].Target = targets[i] as NativeTexture;
localIndex++;
}
}
// Setup OpenGL resources
if (this.samples > 0)
{
this.SetupMultisampled();
}
else
{
this.SetupNonMultisampled();
}
}
void INativeShaderPart.LoadSource(string sourceCode, ShaderType type)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
if (this.handle == 0)
{
this.handle = GL.CreateShader(GetOpenTKShaderType(type));
}
GL.ShaderSource(this.handle, sourceCode);
GL.CompileShader(this.handle);
int result;
GL.GetShader(this.handle, ShaderParameter.CompileStatus, out result);
if (result == 0)
{
string infoLog = GL.GetShaderInfoLog(this.handle);
throw new BackendException(string.Format("{0} Compiler error:{2}{1}", type, infoLog, Environment.NewLine));
}
// Remove comments from source code before extracting variables
string sourceWithoutComments;
{
const string blockComments = @"/\*(.*?)\*/";
const string lineComments = @"//(.*?)\r?\n";
const string strings = @"""((\\[^\n]|[^""\n])*)""";
const string verbatimStrings = @"@(""[^""]*"")+";
sourceWithoutComments = Regex.Replace(sourceCode,
blockComments + "|" + lineComments + "|" + strings + "|" + verbatimStrings,
match =>
{
if (match.Value.StartsWith("/*") || match.Value.StartsWith("//"))
{
return(match.Value.StartsWith("//") ? Environment.NewLine : "");
}
else
{
return(match.Value);
}
},
RegexOptions.Singleline);
}
// Scan remaining code chunk for variable declarations
List <ShaderFieldInfo> varInfoList = new List <ShaderFieldInfo>();
string[] lines = sourceWithoutComments.Split(new[] { ';', '\n' }, StringSplitOptions.RemoveEmptyEntries);
foreach (string t in lines)
{
string curLine = t.TrimStart();
ShaderFieldScope scope;
int arrayLength;
if (curLine.StartsWith("uniform"))
{
scope = ShaderFieldScope.Uniform;
}
else if (curLine.StartsWith("attribute"))
{
scope = ShaderFieldScope.Attribute;
}
else
{
continue;
}
string[] curLineSplit = curLine.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
ShaderFieldType varType = ShaderFieldType.Unknown;
switch (curLineSplit[1].ToUpper())
{
case "FLOAT": varType = ShaderFieldType.Float; break;
case "VEC2": varType = ShaderFieldType.Vec2; break;
case "VEC3": varType = ShaderFieldType.Vec3; break;
case "VEC4": varType = ShaderFieldType.Vec4; break;
case "MAT2": varType = ShaderFieldType.Mat2; break;
case "MAT3": varType = ShaderFieldType.Mat3; break;
case "MAT4": varType = ShaderFieldType.Mat4; break;
case "INT": varType = ShaderFieldType.Int; break;
case "SAMPLER2D": varType = ShaderFieldType.Sampler2D; break;
}
curLineSplit = curLineSplit[2].Split(new char[] { '[', ']' }, StringSplitOptions.RemoveEmptyEntries);
arrayLength = (curLineSplit.Length > 1) ? int.Parse(curLineSplit[1]) : 1;
varInfoList.Add(new ShaderFieldInfo(curLineSplit[0], varType, scope, arrayLength));
}
this.fields = varInfoList.ToArray();
}
void INativeRenderTarget.Setup(IReadOnlyList <INativeTexture> targets, AAQuality multisample)
{
DefaultOpenTKBackendPlugin.GuardSingleThreadState();
if (targets == null)
{
return;
}
if (targets.Count == 0)
{
return;
}
if (targets.All(i => i == null))
{
return;
}
int highestAALevel = MathF.RoundToInt(MathF.Log(MathF.Max(MaxRenderTargetSamples, 1.0f), 2.0f));
int targetAALevel = highestAALevel;
switch (multisample)
{
case AAQuality.High: targetAALevel = highestAALevel; break;
case AAQuality.Medium: targetAALevel = highestAALevel / 2; break;
case AAQuality.Low: targetAALevel = highestAALevel / 4; break;
case AAQuality.Off: targetAALevel = 0; break;
}
int targetSampleCount = MathF.RoundToInt(MathF.Pow(2.0f, targetAALevel));
GraphicsMode sampleMode =
GraphicsBackend.ActiveInstance.AvailableGraphicsModes.LastOrDefault(m => m.Samples <= targetSampleCount) ??
GraphicsBackend.ActiveInstance.AvailableGraphicsModes.Last();
this.samples = sampleMode.Samples;
// Synchronize target information
{
this.targetInfos.Reserve(targets.Count);
int localIndex = 0;
for (int i = 0; i < targets.Count; i++)
{
if (targets[i] == null)
{
continue;
}
this.targetInfos.Count = Math.Max(this.targetInfos.Count, localIndex + 1);
this.targetInfos.Data[localIndex].Target = targets[i] as NativeTexture;
localIndex++;
}
}
#region Setup FBO & RBO: Non-multisampled
if (this.samples == 0)
{
// Generate FBO
if (this.handleMainFBO == 0)
{
GL.Ext.GenFramebuffers(1, out this.handleMainFBO);
}
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, this.handleMainFBO);
// Attach textures
int oglWidth = 0;
int oglHeight = 0;
for (int i = 0; i < this.targetInfos.Count; i++)
{
NativeTexture tex = this.targetInfos[i].Target;
FramebufferAttachment attachment = (FramebufferAttachment)((int)FramebufferAttachment.ColorAttachment0Ext + i);
GL.Ext.FramebufferTexture2D(
FramebufferTarget.FramebufferExt,
attachment,
TextureTarget.Texture2D,
tex.Handle,
0);
oglWidth = tex.Width;
oglHeight = tex.Height;
}
// Generate Depth Renderbuffer
if (this.handleDepthRBO == 0)
{
GL.Ext.GenRenderbuffers(1, out this.handleDepthRBO);
}
GL.Ext.BindRenderbuffer(RenderbufferTarget.RenderbufferExt, this.handleDepthRBO);
GL.Ext.RenderbufferStorage(RenderbufferTarget.RenderbufferExt, RenderbufferStorage.DepthComponent24, oglWidth, oglHeight);
GL.Ext.FramebufferRenderbuffer(FramebufferTarget.FramebufferExt, FramebufferAttachment.DepthAttachmentExt, RenderbufferTarget.RenderbufferExt, this.handleDepthRBO);
// Check status
FramebufferErrorCode status = GL.Ext.CheckFramebufferStatus(FramebufferTarget.FramebufferExt);
if (status != FramebufferErrorCode.FramebufferCompleteExt)
{
throw new BackendException(string.Format("Incomplete Framebuffer: {0}", status));
}
GL.Ext.BindRenderbuffer(RenderbufferTarget.RenderbufferExt, 0);
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, 0);
}
#endregion
#region Setup FBO & RBO: Multisampled
if (this.samples > 0)
{
// Generate texture target FBO
if (this.handleMainFBO == 0)
{
GL.Ext.GenFramebuffers(1, out this.handleMainFBO);
}
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, this.handleMainFBO);
// Attach textures
int oglWidth = 0;
int oglHeight = 0;
for (int i = 0; i < this.targetInfos.Count; i++)
{
NativeTexture tex = this.targetInfos[i].Target;
FramebufferAttachment attachment = (FramebufferAttachment)((int)FramebufferAttachment.ColorAttachment0Ext + i);
GL.Ext.FramebufferTexture2D(
FramebufferTarget.FramebufferExt,
attachment,
TextureTarget.Texture2D,
tex.Handle,
0);
oglWidth = tex.Width;
oglHeight = tex.Height;
}
// Check status
FramebufferErrorCode status = GL.Ext.CheckFramebufferStatus(FramebufferTarget.FramebufferExt);
if (status != FramebufferErrorCode.FramebufferCompleteExt)
{
throw new BackendException(string.Format("Incomplete Framebuffer: {0}", status));
}
// Generate rendering FBO
if (this.handleMsaaFBO == 0)
{
GL.Ext.GenFramebuffers(1, out this.handleMsaaFBO);
}
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, this.handleMsaaFBO);
// Attach color renderbuffers
for (int i = 0; i < this.targetInfos.Count; i++)
{
TargetInfo info = this.targetInfos.Data[i];
FramebufferAttachment attachment = (FramebufferAttachment)((int)FramebufferAttachment.ColorAttachment0Ext + i);
RenderbufferStorage rbColorFormat = TexFormatToRboFormat(info.Target.Format);
if (info.HandleMsaaColorRBO == 0)
{
GL.GenRenderbuffers(1, out info.HandleMsaaColorRBO);
}
GL.Ext.BindRenderbuffer(RenderbufferTarget.RenderbufferExt, info.HandleMsaaColorRBO);
GL.Ext.RenderbufferStorageMultisample(RenderbufferTarget.RenderbufferExt, this.samples, rbColorFormat, oglWidth, oglHeight);
GL.Ext.FramebufferRenderbuffer(FramebufferTarget.FramebufferExt, attachment, RenderbufferTarget.RenderbufferExt, info.HandleMsaaColorRBO);
this.targetInfos.Data[i] = info;
}
GL.Ext.BindRenderbuffer(RenderbufferTarget.Renderbuffer, 0);
// Attach depth renderbuffer
if (this.handleDepthRBO == 0)
{
GL.Ext.GenRenderbuffers(1, out this.handleDepthRBO);
}
GL.Ext.BindRenderbuffer(RenderbufferTarget.RenderbufferExt, this.handleDepthRBO);
GL.Ext.RenderbufferStorageMultisample(RenderbufferTarget.RenderbufferExt, this.samples, RenderbufferStorage.DepthComponent24, oglWidth, oglHeight);
GL.Ext.FramebufferRenderbuffer(FramebufferTarget.FramebufferExt, FramebufferAttachment.DepthAttachmentExt, RenderbufferTarget.RenderbufferExt, this.handleDepthRBO);
GL.Ext.BindRenderbuffer(RenderbufferTarget.RenderbufferExt, 0);
// Check status
status = GL.Ext.CheckFramebufferStatus(FramebufferTarget.FramebufferExt);
if (status != FramebufferErrorCode.FramebufferCompleteExt)
{
throw new BackendException(string.Format("Incomplete Multisample Framebuffer: {0}", status));
}
GL.Ext.BindFramebuffer(FramebufferTarget.FramebufferExt, 0);
}
#endregion
}